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Compare the radii of H atom, H^(+) ion a...

Compare the radii of H atom, `H^(+)` ion and `H^(-)` ion.

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`H^+` is the nucleus of H atom. Its radius is very small. H-ion has number of electrons more than number of protons. Its size is more than that of H atom.The radius is in the order : `H^(+) < H < H^(-)`.
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